Apogee PAR-FAR sensors combine two photodetectors to measure photosythetically active radiation and far-red radiation. — Unique two-band sensor for measuring both the PAR (PPFD) and Far-red outputs of electric grow lights

The new Apogee PAR-FAR sensor is a research-grade tool for measuring both the traditional PPFD photosynthetic photon flux and separately quantifying the photon flux of far-red photons (700-760 nm). The outputs include the traditional quantum flux, the far-red photon flux, and the far-red fraction (far-red photon flux density / sum of PPFD and far-red photon flux density).

This sensor quantifies far-red photons, and for many applications it reduces the need for a more complex measurement with a spectroradiometer.

Spectral Response

The PAR-FAR sensor has a spectral range of 400 to 700 nm ± 5 nm (PAR) and 702 to 761 nm ± 5 nm (Far-red). The spectral responses can be seen in the graph below.

Rugged, Self-cleaning Housing

The patented domed shapped sensor head (diffuser and body) facilitates runoff of dew and rain to keep the sensor clean and minimizes errors caused by dust blocking the radiation path. Sensors are housed in a rugged, anodized aluminum body and electronics are fully-potted.

Typical Applications

Applications include monitoring plant light environments, researching plant morphogenic activity, and photobiology studies.

Mounting

The AL-120 Solar Mounting Bracket with Leveling Plate facilitates mounting the sensor to a mast or pipe. The AL-100 Solar Sensor Leveling Plate is designed to level the sensor while sitting on a flat surface or mounting to a surface.

Output Options

Available as an analog output or in digital SDI-12 or Modbus communication protocols.

High Quality Cable

Pigtail-lead sensors feature an IP68, marine-grade stainless-steel cable connectors built directly into the sensor head to simplify sensor removal for maintenance and recalibration. Cable is shielded-twisted-pair wire with a TPR jacket for high water resistance, UV stability, and flexibility in cold conditions.

Warranty and Support

All Apogee products are backed by an industry-leading four year warranty and outstanding customer support

Specifications
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Graph showing the spectral responses of the PAR-FAR sensor (spectral range of 389 to 692 nm ± 5 nm (PAR) and 702 to 761 nm &plusm; 5 nm (Far-red)). — Unique two-band sensor for measuring both the PAR (PPFD) and Far-red outputs of electric grow lights

The new Apogee PAR-FAR sensor is a research-grade tool for measuring both the traditional PPFD photosynthetic photon flux and separately quantifying the photon flux of far-red photons (700-760 nm). The outputs include the traditional quantum flux, the far-red photon flux, and the far-red fraction (far-red photon flux density / sum of PPFD and far-red photon flux density).

This sensor quantifies far-red photons, and for many applications it reduces the need for a more complex measurement with a spectroradiometer.

Spectral Response

The PAR-FAR sensor has a spectral range of 400 to 700 nm ± 5 nm (PAR) and 702 to 761 nm ± 5 nm (Far-red). The spectral responses can be seen in the graph below.

Rugged, Self-cleaning Housing

The patented domed shapped sensor head (diffuser and body) facilitates runoff of dew and rain to keep the sensor clean and minimizes errors caused by dust blocking the radiation path. Sensors are housed in a rugged, anodized aluminum body and electronics are fully-potted.

Typical Applications

Applications include monitoring plant light environments, researching plant morphogenic activity, and photobiology studies.

Mounting

The AL-120 Solar Mounting Bracket with Leveling Plate facilitates mounting the sensor to a mast or pipe. The AL-100 Solar Sensor Leveling Plate is designed to level the sensor while sitting on a flat surface or mounting to a surface.

Output Options

Available as an analog output or in digital SDI-12 or Modbus communication protocols.

High Quality Cable

Pigtail-lead sensors feature an IP68, marine-grade stainless-steel cable connectors built directly into the sensor head to simplify sensor removal for maintenance and recalibration. Cable is shielded-twisted-pair wire with a TPR jacket for high water resistance, UV stability, and flexibility in cold conditions.

Warranty and Support

All Apogee products are backed by an industry-leading four year warranty and outstanding customer support

Specifications
Learn More

Videos
Learn More

Support Info
Learn More

P2-142 Package: microCache and PAR-FAR Sensor with 2 meter cable

P2-142 Package: microCache and PAR-FAR Sensor with 2 meter cable

P2-141 Package: microCache and PAR-FAR Sensor with 30 cm cable

P2-141 Package: microCache and PAR-FAR Sensor with 30 cm cable

S2-141-SS PAR-FAR Sensor

S2-141-SS PAR-FAR Sensor

S2-441-SS SDI-12 PAR-FAR Sensor

S2-441-SS SDI-12 PAR-FAR Sensor

S2-442-SS Modbus Digital Output PAR-FAR Sensor

S2-442-SS Modbus Digital Output PAR-FAR Sensor

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